I have made a front page for my blog using the normal Joomla (K2) menu item type "Category Blog" but I don't know how to do the same for K2.

When I select menu item type, what am I supposed to choose?

I don't have many categories, and I don't have many menu items. I would like to show all of my items on the front page (just the intro part - the part before "read more"), as that is what I did when I made the Category Blog front page. However, I don't know how to do this with K2 items.

Ideally, I would like to have one column with each item below one another showing the first part of each item, the part above "Read more".

How do I do that, please?

Hi. You need to create a menu link to K2 categories. Set the category in the menu link. If you select only one category remember to go to the category settings. There you will find a lot of options which will help you customize your page as you like.